1. Axial flow of deep well pump should be installed in the well, the submerged depth should meet the requirements for its reliable operation, in the pump unit flow for the design flow of 150%, the minimum submergence depth should be is the first water pump impeller at the bottom of the water level above the line less than 3.20M, and altitude for each additional 300m, deep well pump minimum submergence depth should be increased at least 0.30m;
2. Axis flow of deep well pump is installed in the fire water tank, fire water, its first water pump impeller bottom should the lowest effective water line fire water tank below the and submerged depth should be according to the hydraulic conditions determined by calculation, and should meet the fire pool fire water storage content and effective water can be fully utilized; when the water pump design flow is greater than the 125L/S should according to the pump unit properties to determine the depth of submergence, and should meet the requirements of water pump cavitation allowance;
3. When the fire pool to the lowest level lower than centrifugal water pump outlet pipe center line or the water level can not guarantee the centrifugal pump suction, the axial flow pump for deep well and should use wet pit installation installation on the fire water tank, fire water;
4 when the flow of deep well pump motor open set, function should be rain.
